Add blinky example for STM32F1 bluepill board (#1007)

Code taken from stm32f3_blinky example with LED port adapted to bluepill
board.
Port initialization and README from v1 rtic-examples with slight edits.

1 files changed, 55 insertions, 0 deletions

diff --git a/examples/stm32f1_bluepill_blinky/Cargo.toml b/examples/stm32f1_bluepill_blinky/Cargo.toml
new file mode 100644
index 0000000..a01a215
--- /dev/null
+++ b/examples/stm32f1_bluepill_blinky/Cargo.toml
@@ -0,0 +1,55 @@
+[package]
+name = "bluepill_blinky"
+version = "0.1.0"
+
+edition = "2021"
+authors = [
+    "Ronald Weber <ronaldxweber@gmail.com>",
+    "Simsys <winfried.simon@gmail.com>",
+]
+description = "Example blinky for BluePill"
+license = "MIT OR Apache-2.0"
+readme = "README.md"
+
+[workspace]
+
+[dependencies.rtic]
+path = "../../rtic"
+version = "2.1.1"
+features = ["thumbv7-backend"]
+
+[dependencies.rtic-monotonics]
+path = "../../rtic-monotonics"
+version = "2.0.3"
+features = ["cortex-m-systick"]
+
+[dependencies.cortex-m]
+version = "0.7.7"
+features = ["critical-section-single-core"]
+
+[dependencies]
+embedded-hal = "1.0.0"
+panic-rtt-target = { version = "0.2.0" }
+rtt-target = { version = "0.6.1" }
+
+[dependencies.stm32f1xx-hal]
+version = "0.10.0"
+features = ["rt", "stm32f103", "medium"]
+
+# this lets you use `cargo fix`!
+[[bin]]
+name = "bluepill_blinky"
+test = false
+bench = false
+
+[profile.dev]
+opt-level = 1
+codegen-units = 16
+debug = true
+lto = false
+
+[profile.release]
+opt-level = "s"   # optimize for size
+codegen-units = 1 # better optimizations
+debug = true      # symbols are nice and they don't increase the size on Flash
+lto = true        # better optimizations